Dough: Mix flour, milk eggs and olive oil, season with salt and stand 30 min.
With a brush, spread the heated pan with butter fat and bake very narrow pancakes in it.
Filling: blanch spinach in boiling salted water for 2 min, drain, squeeze and chop in food processor as small as possible.
Heat butter in a frying pan and sauté onions until translucent. Add parsley and basil and steam briefly. Then add the spinach and gently toss for a few minutes. Add whipped cream and bring to a boil one more time. Season with salt, pepper and nutmeg (freshly grated).
Just before serving, fill each omelette with 2 to 3 tbsp. spinach, roll up and arrange on a heated plate.
Tip: Did you know that one bowl of spinach provides about 50 percent of your magnesium needs?